西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (2): 25-29.DOI: 10.3863/j.issn.1000-2634.2001.02.007

• 石油工程 • 上一篇    下一篇

凝析气藏相态恢复理论研究

郭平1 孙雷1 宋文杰2 江同文2

  

  1. 1.西南石油学院石油工程学院,四川 南充 637001;2.塔里木石油勘探开发指挥部研究院
  • 收稿日期:2000-06-29 修回日期:1900-01-01 出版日期:2001-04-20 发布日期:2001-04-20
  • 通讯作者: 郭平

STUDY ON THE PHASE-STATE RESTORARION OF GAS CONDENSATE RESERVOIRS

GUO Ping1 SUN Lei1 SONG Wen-jie2 et al   

  1. Southwest Petroleum Inst,China
  • Received:2000-06-29 Revised:1900-01-01 Online:2001-04-20 Published:2001-04-20

摘要: 凝析气PVT分析数据是进行气藏数值模拟及开采工艺设计的重要参数,但由于各种原因在气藏开发初期未能取得代表性PVT样品或未进行取样,以至使开发方案设计不能正常进行;相态恢复方法是解决此问题的常用方法之一,但目前有关相态恢复理论的系统研究较少。因此首先给出了凝析气藏相态恢复一般原理,在对塔里木英买7井凝析气PVT数据拟合后,研究了地层压力下降到不同程度采出井流物直接进行相态恢复和将此井流物进行一级分离后,用目前分离器油和分离器气按原始生产气油比进行配样而得到的原始流体相态特征以及按地层压力等于露点压力配样,对比了两种不同的恢复方式对原始流体样品代表性的影响。

关键词: 凝析气藏, 相态恢复理论, PVT分析

Abstract: PVT data of gas condensate reservoir provide important parameters for reservoir numerical modeling and recovery planing. For various reasons, however, representative PVT samples of the initial development phase are often not available. Phasestate restoration is one of the methods usually used to solve this problem; but systematic study on the theories behind phase-
state restoration is lacking. In the present work, the general principles of phase-state restoration of gas condensate reservoirs and their application to the Yinmai Well 7 in Tarimu basin are given. After data matching, phase-state restoration was performed directly on the effluents from the well at different
formation pressure drawdowns. Restoration was also performed on mixed separator oil and gas samples assuming the GOR of the initial production phase or assuming a formation pressure equal to the dew pressure. Comparison is made on the influence of the two types of restoration on the fluids as being representative of the initial formation fluids.

Key words: gas condensate reservoir, PVT analysis, phase-state restoration

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